ANSWERS: 1
  • Whoever wrote that question should be fired. 500 people on 24 floors is 21 people per floor, not 12, so that's wrong. Did they measure blood pressure or blood glucose? Those are two different things, so that's wrong. Anyway, maybe that's all superfluous, but it just proves that whoever wrote the question is horrible at teaching. 57 / 150 = 38%. The confidence interval can't be calculated, because the necessary information in this absolutely idiotic question is not given. The correct answer is find a better school.

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